Methanol Immersion Testing
Five elastomer grades; A90H, G92E, V91K, V91A and Z95X were tested in 100% methanol.
The test used BS1806-312 size O-rings. Test conditions were room temperature for 168 hours, with sampling intervals at 24hrs and 72hrs.
- Specimens of each material were immersed in methanol liquid under ambient conditions.
- Volume was measured as per ASTM D297, and hardness as per ASTM D1414/1415; before immersion, at each interval and after 7 days immersion.
- Hardness change in points and volume change in percent was calculated as per ASTM D471.
|Hardness Point Change IRHD||1||-2||-1||-35||-18||-9|
|Volume Swell %||1||2||1||49||5||6|